Adjustable height platform



FIG. 1 is a front view showing my design thereof in a compactedposition;

FIG. 2 is a top view in a compacted position;

FIG. 3 is a left side view in a compacted position;

FIG. 4 is a perspective view in a compacted position;

FIG. 5 is a top view showing my design thereof in an extended position;

FIG. 6 is a front view in an extended position;

FIG. 7 is a left side view in an extended position; and,

FIG. 8 is a perspective view in extended position.

The ornamental design for adjustable height platform, as shown anddescribed.